MrAkells/dwm-flexipatch
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util.c: output function might override errno and thus affect perror()

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Original patch by Raymond Cole with some modifications, thanks!

ref.
https://git.suckless.org/dwm/commit/fcb2476b693ca4c40ad32c7119e27bbeb856865c.html
This commit is contained in:
bakkeby
2024-10-29 22:21:11 +01:00
parent 8ae6f04654
commit 38950399fe
2 changed files with 7 additions and 7 deletions
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2
README.md
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@@ -1,4 +1,4 @@
This dwm 6.5 (5687f46, 2024-06-08) side project has a different take on dwm patching. It uses preprocessor directives to decide whether or not to include a patch during build time. Essentially this means that this build, for better or worse, contains both the patched _and_ the original code. The aim being that you can select which patches to include and the build will contain that code and nothing more. Due to the complexity of some of the patches dwm-flexipatch has diverged from mainstream dwm by making some core patches non-optional for maintenance reasons. For the classic dwm-flexipatch build refer to branch [dwm-flexipatch-1.0](https://github.com/bakkeby/dwm-flexipatch/tree/dwm-flexipatch-1.0).
This dwm 6.5 (fcb2476, 2024-10-27) side project has a different take on dwm patching. It uses preprocessor directives to decide whether or not to include a patch during build time. Essentially this means that this build, for better or worse, contains both the patched _and_ the original code. The aim being that you can select which patches to include and the build will contain that code and nothing more. Due to the complexity of some of the patches dwm-flexipatch has diverged from mainstream dwm by making some core patches non-optional for maintenance reasons. For the classic dwm-flexipatch build refer to branch [dwm-flexipatch-1.0](https://github.com/bakkeby/dwm-flexipatch/tree/dwm-flexipatch-1.0).
For example to include the `alpha` patch then you would only need to flip this setting from 0 to 1 in [patches.h](https://github.com/bakkeby/dwm-flexipatch/blob/master/patches.def.h):
```c

10
util.c
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@@ -1,4 +1,5 @@
/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
@@ -10,17 +11,16 @@ void
die(const char *fmt, ...)
{
va_list ap;
int saved_errno;
saved_errno = errno;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
fputc(' ', stderr);
perror(NULL);
} else {
if (fmt[0] && fmt[strlen(fmt)-1] == ':')
fprintf(stderr, " %s", strerror(saved_errno));
fputc('\n', stderr);
}
exit(1);
}